hpc-lcov
Convert HPC output into LCOV format
https://github.com/brandonchinn178/hpc-lcov#readme
| LTS Haskell 23.19: | 1.1.2 |
| Stackage Nightly 2025-04-30: | 1.2.0 |
| Latest on Hackage: | 1.2.0 |
This version can be pinned in stack with:
hpc-lcov-1.2.0@sha256:b59fb3bba6f440d563ecf15680b6d498dc136891fd856345a2e4c4a136353cdc,2151Module documentation for 1.2.0
- Trace
- Trace.Hpc
Depends on 12 packages(full list with versions):
Used by 1 package in nightly-2025-04-30(full list with versions):
hpc-lcov
Convert HPC output into lcov.info files that can be uploaded to coverage
services, like Codecov.
Quickstart
- Download
hpc-lcovfrom the releases page or install it from Hackage with your favorite package manager - Run your tests with coverage enabled
stack test --coverage- Cabal is not yet supported (https://github.com/brandonchinn178/hpc-lcov/issues/3)
- Run
hpc-lcov - Upload the generated
lcov.infofile to your coverage service
FAQs
How do I convert coverage for an executable?
Note: If you have both tests and executables, HPC will write module information to the same file. Because of this, you’ll have to load the coverage for each separately, with a stack clean in between.
- Build a single executable with coverage enabled (e.g.
stack build :my-exe --coverage) - Run the executable
- This should generate a
.tixfile in the current directory - Run the following, specifying the package that builds the executable:
stack exec -- hpc-lcov --file my-exe.tix --main-package my-package
How do I merge coverage files?
-
Install LCOV (e.g.
brew install lcov) -
Run
lcov -a lcov1.info -a lcov2.info ... > lcov.info